Species with data from:

Vondrak, T.; Bastl, Z.; Bohm, S., Gas-phase tautomerism in 2,4-dihydropyrazol-3-ones: An ultraviolet photoelectron spectroscopic study and MNDO molecular orbital calculations, J. Am. Chem. Soc., 1988, 641.

5 matching species were found.

For each matching species the following will be displayed:

• Chemical name
• Chemical formula
• Structure image (if available)

Click on the name to see more data.

1. Antipyrine (C₁₁H₁₂N₂O)
   
2. 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-2-phenyl- (C₁₀H₁₀N₂O)
   
3. 3H-Pyrazol-3-one, 2,4-dihydro-4,4,5-trimethyl-2-phenyl- (C₁₂H₁₄N₂O)
   
4. 3-Amino-1-phenyl-2-pyrazolin-5-one (C₉H₉N₃O)
   
5. 3H-Pyrazol-3-one, 2,4-dihydro-2,5-dimethyl- (C₅H₈N₂O)